Color liquid crystal display apparatus and method for producing the same

• US 6,072,557 A
• Filed: 07/30/1999
• Issued: 06/06/2000
• Est. Priority Date: 07/31/1998
• Status: Expired due to Term

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Kishimoto, Katsuhiko
• Primary Examiner(s): Parker, Kenneth
• Assistant Examiner(s): QI, ZHI QIANG
• Application Number:
  US09/362,993
• Time in Patent Office: 312 Days
• Field of Search: 349/156, 349/158, 349/106, 349/108, 349/183
• US Class Current: 349/156
• CPC Class Codes: G02F 1/133377 Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence

Abstract

A color liquid crystal display apparatus of the present invention, includes: a first substrate; a second substrate; and a liquid crystal layer interposed between the first and second substrates, wherein the first substrate includes a color filter having a plurality of coloring resin layers, polymer wall covering a boundary portion between two adjacent coloring resin layers among the plurality of coloring resin layers, and transparent electrodes covering at least a part of the polymer wall, the liquid crystal layer has a plurality of liquid crystal regions partitioned by the polymer wall; and liquid crystal molecules in the plurality of liquid crystal regions are axially symmetrically aligned with respect to an axis perpendicular to a surface of the first substrate at least under an application of a voltage.

Claims

1. A color liquid crystal display apparatus, comprising:

a first substrate;

a second substrate; and

a liquid crystal layer interposed between the first and second substrates,

wherein the first substrate includes a color filter having a plurality of coloring resin layers, a polymer wall covering a boundary portion between respective two adjacent coloring resin layers among the plurality of coloring resin layers, and transparent electrodes covering at least a part of the polymer wall,

the liquid crystal layer has a plurality of liquid crystal regions partitioned by the polymer wall; and

liquid crystal molecules in the plurality of liquid crystal regions are axially symmetrically aligned with respect to an axis perpendicular to a surface of the first substrate at least under an application of a voltage.

2. A color liquid crystal display apparatus according to claim 1, wherein the polymer wall has side faces inclined with respect to the surface of the first substrate.

3. A color liquid crystal display apparatus according to claim 2, wherein an angle of the side faces of the polymer wall inclined with respect to the surface of the first substrate is in a range of 3°

to 45°

.

4. A color liquid crystal display apparatus according to claim 1, wherein the polymer wall is made of photosensitive resin.

5. A color liquid crystal display apparatus according to claim 1, wherein the polymer wall is made of transparent resin.

6. A color liquid crystal display apparatus according to claim 1, further including column-shaped projections on at least a part of a surface of the polymer wall on the liquid crystal layer side,

wherein a gap between the first and second substrates is formed by the polymer wall and the column-shaped projections.

7. A color liquid crystal display apparatus according to claim 1, wherein the first substrate has a silicon dioxide layer covering the polymer wall, and the transparent electrodes are formed on the silicon dioxide layer.

8. A color liquid crystal display apparatus according to claim 7, further including column-shaped projections on at least a part of a surface of the polymer wall on the liquid crystal layer side,

wherein a gap between the first and second substrates is formed by the polymer wall and the column-shaped projections, and the column-shaped projections are formed on the silicon dioxide layer.

9. A color liquid crystal display apparatus according to claim 1, further including column-shaped projections on at least a part of a surface of the polymer wall on the liquid crystal layer side,

wherein a gap between the first and second substrates is formed by the polymer wall and the column-shaped projections, and a silicon dioxide layer is formed on the polymer wall and a surface of the column-shaped projections on the liquid crystal layer side.

10. A color liquid crystal display apparatus according to claim 9, further including a silicon nitride layer between the surfaces of the polymer wall and the column-shaped projections on the liquid crystal layer side, and the silicon dioxide layer.

11. A method for producing a liquid crystal display apparatus including a first substrate, a second substrate, and a liquid crystal layer interposed between the first and second substrates, the liquid crystal layer including a plurality of liquid crystal regions partitioned by a polymer wall, comprising the steps of:

forming a color filter layer having a plurality of coloring resin layers on the first substrate;

forming a polymer layer made of photosensitive resin on the color filter layer;

patterning the polymer layer by photolithography, thereby forming the polymer wall covering boundary portions between respective two adjacent coloring resin layers among the plurality of coloring resin layers;

forming a transparent conductive layer on the first substrate on which the polymer wall is formed; and

patterning the transparent conductive layer to form transparent electrodes covering at least a part of the polymer wall.

12. A method for producing a color liquid crystal display apparatus according to claim 11, further comprising the step of forming a silicon dioxide layer on the polymer wall,

wherein the transparent conductive layer is formed on the first substrate on which the silicon dioxide layer is formed, and the transparent conductive layer formed on the silicon dioxide layer is selectively etched to form the transparent electrodes.

13. A method for producing a color liquid crystal display apparatus according to claim 12, further comprising the step of forming column-shaped projections on at least a part of a surface of the polymer wall on the liquid crystal layer side,

wherein the column-shaped projections are formed on the silicon dioxide layer which is exposed by selective etching the transparent conductive layer.

14. A method for producing a color liquid crystal display apparatus according to claim 12, further comprising the steps of forming column-shaped projections on at least a part of a surface of the polymer wall on the liquid crystal layer side, and forming a silicon dioxide layer on the surfaces of the polymer wall and the column-shaped projections on the liquid crystal layer side.

15. A method for producing a color liquid crystal display apparatus according to claim 14, further comprising the step of forming a silicon nitride layer between the surfaces of the polymer wall and the column-shaped projections on the liquid crystal layer side, and the silicon dioxide layer.